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A facile one step route that introduces functionality to polymer powders for laser sintering

Krumins, Eduards; Crawford, Liam A.; Rogers, David M.; Machado, Fabricio; Taresco, Vincenzo; East, Mark; Irving, Samuel H.; Fowler, Harriet R.; Jiang, Long; Starr, Nichola; Parmenter, Christopher D.J.; Kortsen, Kristoffer; Cuzzucoli Crucitti, Valentina; Avery, Simon V.; Tuck, Christopher J.; Howdle, Steven M.

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Authors

Dr EDUARDS KRUMINS Eduards.Krumins2@nottingham.ac.uk
Research Fellow in integratingartificial intelligence with additivemanufacturing for the manufacture of med

Liam A. Crawford

Fabricio Machado

Mark East

Samuel H. Irving

Harriet R. Fowler

Dr LONG JIANG LONG.JIANG@NOTTINGHAM.AC.UK
SURFACE ANALYTICAL OFFICER

Kristoffer Kortsen



Abstract

Laser Sintering (LS) is a type of Additive Manufacturing (AM) exploiting laser processing of polymeric particles to produce 3D objects. Because of its ease of processability and thermo-physical properties, polyamide-12 (PA-12) represents ~95% of the polymeric materials used in LS. This constrains the functionality of the items produced, including limited available colours. Moreover, PA-12 objects tend to biofoul in wet environments. Therefore, a key challenge is to develop an inexpensive route to introduce desirable functionality to PA-12. We report a facile, clean, and scalable approach to modification of PA-12, exploiting supercritical carbon dioxide (scCO2) and free radical polymerizations to yield functionalised PA-12 materials. These can be easily printed using commercial apparatus. We demonstrate the potential by creating coloured PA-12 materials and show that the same approach can be utilized to create anti-biofouling objects. Our approach to functionalise materials could open significant new applications for AM.

Citation

Krumins, E., Crawford, L. A., Rogers, D. M., Machado, F., Taresco, V., East, M., Irving, S. H., Fowler, H. R., Jiang, L., Starr, N., Parmenter, C. D., Kortsen, K., Cuzzucoli Crucitti, V., Avery, S. V., Tuck, C. J., & Howdle, S. M. (2024). A facile one step route that introduces functionality to polymer powders for laser sintering. Nature Communications, 15(1), Article 3137. https://doi.org/10.1038/s41467-024-47376-4

Journal Article Type Article
Acceptance Date Mar 28, 2024
Online Publication Date Apr 11, 2024
Publication Date 2024
Deposit Date Apr 16, 2024
Publicly Available Date Apr 18, 2024
Journal Nature Communications
Electronic ISSN 2041-1723
Publisher Nature Publishing Group
Peer Reviewed Peer Reviewed
Volume 15
Issue 1
Article Number 3137
DOI https://doi.org/10.1038/s41467-024-47376-4
Keywords Organic molecules in materials science; Polymers
Public URL https://nottingham-repository.worktribe.com/output/33567173
Publisher URL https://www.nature.com/articles/s41467-024-47376-4

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